169 (number)
For the year AD, see 169 AD.
169 is the natural number following 168 and preceding 170.
In mathematics
- 169 is an odd number
- 169 is a square number. 13 x 13 = 169, and the reverse 31 x 31 = 961
- Being 13 squared, 169 is one of the few squares to also be a centered hexagonal number. But like any other odd square, it is a centered octagonal number
- 169 is an odd-indexed Pell number, thus it is also a Markov number, appearing in the solutions (2, 169, 985), (2, 29, 169), (29, 169, 14701), ...
- 169 is the sum of seven consecutive primes: 13 + 17 + 19 + 23 + 29 + 31 + 37
- 169 is a composite number
- 169 is a deficient number, as 14 is less than 169
- Divisors: 1, 13, 169
In astronomy
In geography
In the military
In movies
In music
In population
- Malta ranks #169 in world population
- Albendea, Spain has a population of 169
- Carlton, West Yorkshire, England has a population of 169 (according to a 2001 census)
- English Harbour East, Newfoundland and Labrador, Canada has a population of 169
- Jasenovo, Slovakia has a population of 169
- U.S. towns with a population of 169 in the 2000 census include:
- Anderson, Nebraska
- Barnett, Minnesota
- Bedford, Wyoming
- Brighton, Minnesota
- Broadwell, Illinois
- Eagles Nest, Minnesota
- Edgerton, Wyoming
- Elm River, Michigan
- Fabius, Iowa
- Fairfield, Minnesota
- Fortine, Montana
- Franklin, Iowa
- Haddam, Kansas
- Harrietta, Michigan
- High Point, Iowa
- Highwater, Minnesota
- Kekoskee, Wisconsin
- Kings Point, Montana
- Lime Ridge, Wisconsin
- Mantee, Mississippi
- Marquette, Wisconsin
- Neskowin, Oregon
- Norcatur, Kansas
- Pullman, West Virginia
- Sanford, Minnesota
- Ward, Colorado
- Yoder, Wyoming
In sports
In transportation
In TV and radio
In other fields
169 is also:
See also
External links
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